To speak of this subject you must... explain the nature of the resistance of the air, in the second the anatomy of the bird and its wings, in the third the method of working the wings in their various movements, in the fourth the power of the wings and the tail when the wings are not being moved and when the wind is favourable to serve as guide in various movements.

Where the spirit does not work with the hand, there is no art.

But to me all sciences seem vain and full of error that are not born of experience, mother of all certainty, and do not terminate in an actual experience.

I am still hopeful. A falcon, Time. But the coincidence is probably accidental.

If we make mistakes in our first compositions and do not know them, we may not amend them.

You grow in reputation like bread in the hands of a child.

Music... is the shaping of the invisible.